Research on parameter testing method of centralized reactive power compensation device for photovoltaic power station

2019 ◽  
Author(s):  
Xiaolin Zhang ◽  
Guangxiu Yao ◽  
Xiaodi Qin ◽  
Wei Dong ◽  
Yinghua Dong
Keyword(s):  
Reactive Power ◽  
Reactive Power Compensation ◽  
Power Station ◽  
Testing Method ◽  
Photovoltaic Power ◽  
Compensation Device

The Application of S7-200 PLC Reactive Compensation Device in Small Substation

2012 ◽  
Vol 479-481 ◽  
pp. 1476-1480
Author(s):  
Qing He Chu ◽  
Wen Si Cao ◽  
Zhen Nie
Keyword(s):  
Reactive Power ◽  
Control Method ◽  
High Reliability ◽  
Reactive Power Compensation ◽  
Control Device ◽  
Reactive Compensation ◽  
Reconstruction Project ◽  
Compensation Device ◽  
And Control

In the present rural power grid reconstruction project ,according to the problems of capacitor reactive power compensation in rural small substation. Take a small substation for instance, according to its operation and control method, set the criterion of the capacitor bank switching. A new high reliability, flexible reactive power compensation control device based on s7-200 PLC is designed. It plays an important role in improving the power supply , guaranteeing the quality of voltage, reducing the loss of rural power gid.

scholarly journals Method for improving performance of devices for adjustable reactive power compensation

2019 ◽  
Vol 110 ◽  
pp. 01010
Author(s):  
Vasiliy Cheremisin ◽  
Andrey Nikonov
Keyword(s):  
Power Supply ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
Point Selection ◽  
Traction Power Supply System ◽  
Current Voltage ◽  
Compensation Device ◽  
Traction Power Supply ◽  
The Relationship ◽  
Traction Power

The article presents a method for selecting the parameters of the current-voltage characteristics of adjustable reactive power compensation devices used at sectioning stations of railway sections electrified by alternating current with a voltage of 27.5 kV. This technique is based on the experience of operating two types of devices in the traction power supply system. Power control of these devices is implemented by the voltage level at the switching point. Selection of the setpoint voltage and slope characteristics was done. The developed method allows increasing the efficiency of devices by eliminating the voltage losses on the active component of traction loads. That will reduce the loss of electricity in the system of traction power supply. Changing the parameters of the characteristics will increase the relationship between the reactive power consumed in the zone and the voltage measured by the devices. Following the results of the formation of the methodology, an example of the choice of characteristics for a real compensation device is presented.

Research on the Large Disturbance Characteristics of the Pumped Storage Motor with the Time-Stepping FEM Consequently

2015 ◽  
Vol 740 ◽  
pp. 339-342
Author(s):  
Sheng Huang ◽  
Jin Ping Kang
Keyword(s):  
Working Condition ◽  
Reactive Power ◽  
Reactive Power Compensation ◽  
The Other ◽  
Power Station ◽  
Time Stepping ◽  
Overall Efficiency ◽  
Pumped Storage ◽  
The Stability ◽  
Large Disturbance

In recent years, the proportion of pumped storage power station in the power grid is increasing, which has many special advantages. The pumped storage motor has two kinds of working condition of generator and motor, not only can the system regulate the reactive power, but also can modify the power factor of the grid resulting in the reduction of the investment on the reactive-power-compensation equipment. On the other hand, the above system is able to enhance both the stability and the overall efficiency. Pumped storage motor start-stop and working condition switch frequently. The test will be analysis and researched with the Time-stepping FEM Consequently, this paper analyses the large disturbance characteristics of the pumped storage motor.

Reactive Power Compensation of Distribution Network Based on Bacterial Colony Chemotaxis Algorithm

2011 ◽  
Vol 130-134 ◽  
pp. 2948-2952
Author(s):  
Hong Liang Wang ◽  
Lin Chuan Li
Keyword(s):  
Distribution System ◽  
Power Loss ◽  
Reactive Power ◽  
Distribution Network ◽  
Reactive Power Compensation ◽  
Heavy Load ◽  
Bacterial Colony ◽  
Operation Conditions ◽  
Fixed Part ◽  
Compensation Device

Reactive power compensation of distribution network is an important method to improve power quality and voltage stability, while reducing the power loss of the distribution network. In this paper the objective function is built to minimize all the costs which include power loss costs and investment of the dynamic reactive power compensation device divided into each year. The actual operation of the distribution network is simulated considering light, normal and heavy load operation conditions. Bacterial colony chemotaxis (BCC) algorithm is used to determine which nodes to install the compensation devices. The calculation of reactive power compensation is done with the back/forward sweep algorithm adapting to the radial distribution system. In order to compensate three different load conditions separately, the fixed part and the switching part of the dynamic reactive power compensation device are used. This method applies to 28-node system, the result demonstrates that the method is feasible and effective.

Sign in / Sign up

Export Citation Format

Share Document